Last modified: 2014-05-10 14:03:15 UTC
See https://www.dropbox.com/s/60q4ebzof00wo75/Screenshot%202014-05-09%2017.29.16.png Happened on https://www.mediawiki.org/wiki/Talk:Compact_Personal_Bar (but would on any page)
Change 132453 had a related patch set uploaded by Spage: FeatureCompactor::compactRow always expects alphadecimal ids https://gerrit.wikimedia.org/r/132453
Gerrit change #132421 fixed it ^above is the backport.
Change 132453 merged by jenkins-bot: FeatureCompactor::compactRow always expects alphadecimal ids https://gerrit.wikimedia.org/r/132453